4 ms·

So you're saying that we can't get the weight using it's speed, orbit radius and planet volume? I think I remember this question on my Physics I test! http://e

So you're saying that we can't get the weight using it's speed, orbit radius and planet volume? I think I remember this question on my Physics I test! http://en.wikipedia.org/wiki/Centripetal_force#Formula http://en.wikipedia.org/wiki/Centripetal_force#Formula We have: r, v, m-star, f-star - so m-planet follows right?

Tossrock 15y ago
We don't have "f-star"; the centripedal force (or the force of gravity in this case) is the product of both the mass of the star and the mass of the planet, which we don't have.